1 ; RUN: llc -mtriple=aarch64-apple-ios -asm-verbose=false -aarch64-collect-loh=false \ 2 ; RUN: -O1 -global-merge-group-by-use -global-merge-ignore-single-use \ 3 ; RUN: %s -o - | FileCheck %s 4 5 ; Check that, at -O1, we only merge globals used in minsize functions. 6 ; We assume that globals of the same size aren't reordered inside a set. 7 ; We use -global-merge-ignore-single-use, and thus only expect one merged set. 8 9 @m1 = internal global i32 0, align 4 10 @n1 = internal global i32 0, align 4 11 12 ; CHECK-LABEL: f1: 13 define void @f1(i32 %a1, i32 %a2) minsize nounwind { 14 ; CHECK-NEXT: adrp x8, [[SET:l__MergedGlobals]]@PAGE 15 ; CHECK-NEXT: add x8, x8, [[SET]]@PAGEOFF 16 ; CHECK-NEXT: stp w0, w1, [x8] 17 ; CHECK-NEXT: ret 18 store i32 %a1, i32* @m1, align 4 19 store i32 %a2, i32* @n1, align 4 20 ret void 21 } 22 23 @m2 = internal global i32 0, align 4 24 @n2 = internal global i32 0, align 4 25 26 ; CHECK-LABEL: f2: 27 define void @f2(i32 %a1, i32 %a2) nounwind { 28 ; CHECK-NEXT: adrp x8, _m2@PAGE 29 ; CHECK-NEXT: adrp x9, _n2@PAGE 30 ; CHECK-NEXT: str w0, [x8, _m2@PAGEOFF] 31 ; CHECK-NEXT: str w1, [x9, _n2@PAGEOFF] 32 ; CHECK-NEXT: ret 33 store i32 %a1, i32* @m2, align 4 34 store i32 %a2, i32* @n2, align 4 35 ret void 36 } 37 38 ; If we have use sets partially overlapping between a minsize and a non-minsize 39 ; function, explicitly check that we only consider the globals used in the 40 ; minsize function for merging. 41 42 @m3 = internal global i32 0, align 4 43 @n3 = internal global i32 0, align 4 44 45 ; CHECK-LABEL: f3: 46 define void @f3(i32 %a1, i32 %a2) minsize nounwind { 47 ; CHECK-NEXT: adrp x8, [[SET]]@PAGE 48 ; CHECK-NEXT: add x8, x8, [[SET]]@PAGEOFF 49 ; CHECK-NEXT: stp w0, w1, [x8, #8] 50 ; CHECK-NEXT: ret 51 store i32 %a1, i32* @m3, align 4 52 store i32 %a2, i32* @n3, align 4 53 ret void 54 } 55 56 @n4 = internal global i32 0, align 4 57 58 ; CHECK-LABEL: f4: 59 define void @f4(i32 %a1, i32 %a2) nounwind { 60 ; CHECK-NEXT: adrp x8, [[SET]]@PAGE 61 ; CHECK-NEXT: add x8, x8, [[SET]]@PAGEOFF 62 ; CHECK-NEXT: adrp x9, _n4@PAGE 63 ; CHECK-NEXT: str w0, [x8, #8] 64 ; CHECK-NEXT: str w1, [x9, _n4@PAGEOFF] 65 ; CHECK-NEXT: ret 66 store i32 %a1, i32* @m3, align 4 67 store i32 %a2, i32* @n4, align 4 68 ret void 69 } 70 71 ; CHECK-DAG: .zerofill __DATA,__bss,[[SET]],16,3 72 ; CHECK-DAG: .zerofill __DATA,__bss,_m2,4,2 73 ; CHECK-DAG: .zerofill __DATA,__bss,_n2,4,2 74 ; CHECK-DAG: .zerofill __DATA,__bss,_n4,4,2 75
